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haXe 2 Beginner's Guide

You're reading from   haXe 2 Beginner's Guide Develop exciting applications with this multi-platform programming language

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Product type Paperback
Published in Jul 2011
Publisher
ISBN-13 9781849512565
Length 288 pages
Edition Edition
Languages
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Toc

Table of Contents (21) Chapters Close

haxe 2
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting to know haXe FREE CHAPTER 2. Basic Syntax and Branching 3. Being Cross-platform with haXe 4. Understanding Types 5. The Dynamic Type and Properties 6. Using and Writing Interfaces, Typedefs, and Enums 7. Communication Between haXe Programs 8. Accessing Databases 9. Templating 10. Interfacing with the Target Platform 11. A Dynamic Website Using JavaScript 12. Creating a Game with haXe and Flash Pop Quiz Answers Index

Handling relations


Most of the time, you have modeled your database with relations inside it.

The haXe SPOD is able to handle one-to-one and many-to-one relations.

This is done by implementing the static function RELATIONS that takes no parameter. It has to return an array of anonymous objects made of the fields prop, key, and manager.

The prop field will be a string that is the name of a property by which you will get and set the object. This property has to be a dynamic property.

The key field is also a string that is the name of the field (in the database) that stores the foreign key.

So, let's take our User example and a sponsorship program to it. A user can sponsor another one.

class User extends neko.db.Object
{
   public var id : Int;
   public var username : String;
   public var password : String;
   public var sponsorId : Int; //Foreign Key
   //The property
   public var sponsor(dynamic, dynamic) : User;
   //Our function
   static function RELATIONS()
   {
      return [{prop: "sponsor...
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